AIML - <set>, <get> Tags

<set> and <get> tags are used to work with variables in AIML. Variables can be predefined variables or programmer created variables.

Syntax

<set> tag is used to set value in a variable.

<set name = "variable-name"> variable-value </set>

<get> tag is used to get value from a variable.

<get name = "variable-name"></get>

For example, consider the following conversation.

Human: I am Mahesh
Robot: Hello Mahesh!
Human: Good Night
Robot: Good Night Mahesh! Thanks for the conversation!

Example

Create setget.aiml inside C > ab > bots > test > aiml and setget.aiml.csv inside C > ab > bots > test > aimlif directories.

setget.aiml

<?xml version = "1.0" encoding = "UTF-8"?>
<aiml version = "1.0.1" encoding = "UTF-8"?>
   <category>
      <pattern>I am *</pattern>
      <template>
         Hello <set name = "username"> <star/>! </set>
      </template>  
   </category>  
   
   <category>
      <pattern>Good Night</pattern>
      <template>
         Hi <get name = "username"/> Thanks for the conversation!
      </template>  
   </category>  
   
</aiml>

setget.aiml.csv

0,I am *,*,*, Hello <set name = "username"> <star/>! </set>,setget.aiml
0,Good Night,*,*, Hi <get name = "username"/> Thanks for the conversation!,setget.aiml

Execute the Program

Open the command prompt. Go to C > ab > and type the following command −

java -cp lib/Ab.jar Main bot = test action = chat trace = false

Verify the Result

You will see the following output −

Human: I am Mahesh
Robot: Hello Mahesh!
Human: Good Night
Robot: Good Night Mahesh! Thanks for the conversation!